Beat the heat this summer thanks to the Chill-Its Unisex Wet Evaporative Cooling Vest with Zipper Closure. This evaporative cooling vest works best in dry areas, cooling abilities in humid environments may be decreased. The advanced PVA cooling technology is lighter weight than other wet evaporative vests on the market. Each wet evaporative vest material activates quickly and easily to start cooling you off. Wet evaporative vest material activates quickly and easily to start cooling you off Advanced PVA cooling technology is lighter weight than other wet evaporative vests Remains cool for up to 4 hours Evaporative cooling vest works best in dry areas, cooling abilities in humid environments may be decreased Machine washable for convenience; hang dry Ideal summer work vest for workers in pulp/paper, iron/steel, vulcanizing, foundries, etc. or for people running, biking, doing yard work, riding motorcycle and more Side mesh panels for breathable, moisture-wicking comfort Front zipper offers an easy on/off, customized fit For best results, we recommend this body cooling vest be worn over a t-shirt and not covered by other clothing To activate, simply run under water and wring out - no ice or refrigeration is needed Chill-Its Unisex Wet Evaporative Cooling Vest with Zipper Closure